Coming to America

Congress is doing something right at the border for a change, making it easier for allies from Estonia to South Korea to visit America. The move is an economic boon and a foreign-policy success story.

Homeland-security legislation passed last week on Capitol Hill expands eligibility for America's visa-waiver program. The program allows nationals of designated countries to enter the U.S. for up to 90 days without applying for a visa before leaving home. Twenty-seven countries currently participate, including most of Western...